C. Marvel, G. E. Inskeep, R. Deanin
Nov 1, 1947
Citations
0
Influential Citations
5
Citations
Journal
Rubber Chemistry and Technology
Abstract
Abstract Butadiene has been copolymerized in a typical emulsion polymerization recipe with each of the monochloro-, monobromo-, monofluoro-, and dichlorostyrenes, with the mixed mono-, di-, tri-, tetra-, and pentachlorostyrenes, and with p-cyanostyrene and several of its derivatives. While 2,5- and 3,4-dichlorostyrene copolymerized with butadiene more rapidly than does styrene itself, 2,6-dichlorostyrene and the mixed tri-, tetra-, and pentachlorostyrenes copolymerized at a slower rate than did the control. 2,5-Dichlorostyrene entered the copolymer much more rapidly, and 2,6-dichlorostyrene and pentachlorostyrene much more slowly, then does styrene itself. The mono- and dihalogenated styrenes in general gave copolymers whose quality indexes were about equal to that of GR-S; o-chlorostyrene, 2,5- and 3,4-dichlorostyrenes, and p-cyanostyrene all gave copolymers with quality indexes higher than that of GR-S. The mixed tri- and tetrachlorostyrenes gave copolymers of inferior quality.